Thread-waxing device.



1. DOIDGE. THREAD WAXING DEVICE. APPLICATION FILED Aue.s, IsII.

J. 3. DOIDGE.

THREAD WAXING DEVICE. APPLICATlON FILED AUG. 3. 19:1.

1 1%@ 8$@D Patentefi. May 25, 1915.

2 SHEETS-SHEET 2- LVVENTOR.

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JOHN J. ponies, or sham rahitfiii'en am, msshcfissms, tssie'noit TO THE a n.

Lone MACHINERY ea, or SOUTH axon or connnomxou'r.

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Specification of Lears Patent.

Patented May 25, 1915.

Application filed August a, 1911. serial no. 642,094.

To all whom it may concern:

Be it known th t 1, JOHN J. DOIDGE, a subject of the King of Great Britain, residing at South Framingham, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Thread-Waxing Devices, of which the following is a specification.

My invention relates to improvements in machines known as insole stitchers, and consists of certain peculiar means to supply hot wax to the threads which supply the bobbin and for the use of the stitcher proper of the machine, as hereinafter set forth.

The object of my invention is, to provide means in a machine of the class above noted for adequately waxing both threads and also for maintaining the consistency of the wax on such threads at an approximately uniform degree throughout their entire courses, so that the threads do not become stiff and interfere with the proper working or operation of the machine, but on the contraryenable said .machine to produce the best results attainable.

I attain the object of my invention by the means and mechanism illustrated in the accompanying drawings, in which:-

Figure 1 is a front elevation of a machine which embodies a practical form of my invention; Fig. 2, an enlarged top plan of the combined heating and wax-supply tank, with associated parts, also looking down from a position in the rear; Fig. 3, a similar enlarged top plan of said tank, without said associated parts, Fig. 4, a central vertical section taken on lines 88, looking in the direction of the associated arrow, in Fig. 2, and, Fig. 5, an enlarged rear elevation, in partial section, of the thread-carrying or guiding device for said tank.

Similar figures refer to similar parts throughout the several views.

I will firstbriefly describe the old parts of the stitcher herein shown.

Rising from a base 1, which base is somewhat larger or longer than usual, is a column 2.

At the top of the column 2 is ahead 3.

A driving shaft 4, for the stitching mech anism which is not herein shown, is journaled in the head 3, and shaft has a haid-wheel pulley 5 secured thereon at one en A table 6 is attached to the front'of the column 2, and a bracket 7, which is supported by said table has journaled therein a shaft 9 for h bobbin 10. The shaft 9 is the bobbin-winding shaft, and carries a loose pulley 11 and clutch members 12.

At 14 is represented a member for a second bobbin 10 from which one of the threads is drawn in stitching. The first bobbin mentioned above is at winding position in the act of having a thread wound thereon, while the second-mentioned bobbin is at feeding position, after being wound, in readiness to supply one of the threads required in the stitching operation.

The driving mechanism, including the starting and stopping elements, for the shafts 4 and 9, which is entirely supported on the base 1, is described as follows: Set in two sockets 15 on the base 1, behind the vertical plane of the back of the column 2, and secured therein by means of bolts 1616, is a pair of posts 17 forked at their upper terminals to receive a pair of bearings 18 for a shaft 19, each of such bearings being supported by a pair of centering screws 20 tapped into and through the arms or branches of one of said posts. The shaft 19 extends behind the column 2, and has mounted loose thereon a pulley 21 which is connected by means of a cross-belt 22 with the pulley 5. The pulley 21 is provided with a grooved hub 23. Secured on the shaft 19 in operative relation to the pulley 21 is a disk 21, and also secured on said shaft is a pulley 25 which drives the bobbin-winding shaft 9 through the medium of a belt 26 that connects said pulley with the pulley 11. Two bearings 27 rising from the base 1, and loosely mounted or journaled in such bearings, at right-angles to the shaft 19, is a shaft 28 which carries a yoke 29 in engagement with the grooved hub 23, and a foot treadle 30 at the front end.

Secured on the shaft 19, at the right-hand terminal thereof, is a pulley 31 which in practice is belted to a suitable source of power.

To start the machine, assuming that the shaft 19 be in motion, depress the free end of the, treadle 30. This act starts the machine by rocking the shaft 28 and the yoke 29 in the proper direction to force the pulley 2. along on the revolving shaft 19 to the right and into frictional engagement with the revolving disk 24, the rotary .motion from saiddisk being then communicated to said pulley and by the latter to the mechanism driven therefrom, through the medium of the belt 22, pulley 5, and shaft 4. As long as the treadle 30 is pressed down the pulley 21 continues to revolve, but upon the release of said treadle the strain of the belt 22 and the natural tendency of said pulley to move away from the disk 24 act to bring about the separation of the former from the latter, and as soon as such separation occurs said pulley together with the mechanism driven thereby stops. The pulley 25, with the parts directly driven thereby, rotates constantly with the shaft 19, the clutch members 12 being provided for the proper control of the bobbin-winding shaft 9.

To afford a suitable means of support for a cone 32 of thread 33 to be wound on the lower bobbin 10, and for a cone 34 of thread for the statching mechanism, the thread from said cone 34 not being shown, I provide a bracket 36.

Passing now to the heating system of the machine, with which the wax supply is included, it will be observed that there is a tank 41 fastened to the back side of the col-- umn 2, a heating box 42 on the table 6 in front of said column, and a semi-circular heating box 43 over the bobbin-container or member 14. Fitted to the tank 41 for vertical adjustment thereon is an extension 44 which extends below the bottom of said tank. Underthe bottom of the tank 41 within the extension 44 are two Bunsen burners (not shown) mounted on a corresponding number of vertical pipes 46 which are connected with a line of piping 48.

If steam is to be obtained from an outside source, connection is made through a vertical pipe 50 which rises from the top of the tank 41.

In the top of the tank 41 is a filling-hole which is normally closed by means of a cap 55. A water-gage 56 is provided on the front of the tank to indicate the amount of water therein.

A low-pressure safety-valve 57, of ordinary construction, is set in the top of the tank 41, for the purpose of relieving excessive steam pressure within said tank.

1 The tank 41, as herein illustrated, has

three vertical flues 58 extending through and opening above. andbelow the top and bottom, respectively, of the same, and there is an inner tank or compartment 59 which depends from the top of the outer tank, where 60 it opens, to within a short distance of the floor of said outer tank. This compartment or receptacle 59 is for the wax which is applied to the threads employed in stitching, and the opening into such receptacle for fil at ing and other purposes appears at 60. The

fiues 58 provide for a draft through the tank 41 from the open-bottom chamber.

A plate 61, designed to be placed on the top of the tank 41 and to be secured thereon by means of two screws 62, is equipped with in said boss and having a guide-wheel or idler 72 mounted at its upper end, and a tension-wheel 73 in front and above the horizontal plane of the top of the boss 66. The 5 guide tubes 63 are received in the wax receptacle 59, and the inner branch of each of said tubes opens through the top of the plate 61,

as shown at 7474, in Fig. 2. The elbows or curved portions of the tubes 63 are slotted 0 at 7575 to accommodate the idlers 64 which are mounted on horizontal pins 7676 mounted or journaled in the bottom portions of the slotted parts of said tubes. The idlers 64 are thus exposed very freely to the wax in the receptacle 59. Said idlers have grooved peripheries, and the diameter of each is approximately equal to the distance between centers of the parallel branches of either tube 63. Thus a thread can readily pass through either tube 63 and under the idler at the base thereof. Said thread can also passupward through either screw 68,

and in so doing has any surplus wax that may be adhering thereto removed by the constricted inner end of said screw.

The tension-wheel 73 is loosely mounted on a shouldered spindle or rod 77 which is horizontal and has one terminal rigidly secured in a lug 78 on the plate 61. Tapped into the smaller end of the rod 77 is an adjusting screw 79, and between the head of said screw and a disk 80 mounted thereon and bearing against one side of the tensionwheel 73 is a spiral-spring 81. The tensionwheel 73 is thus confined in a measure between the shouldered part of the rod 77 and the spring-pressed disk 80, and to rotate said wheel suflicient force must be put forth to overcome the frictional resistance produced between the contacting parts and by the spring 81. This tension device is of usual and well-known construction.

Wax can be introduced into the receptacle 59 through the opening 60 without re moving the plate 61, but said plate can be easily and quickly removed, when occasion requires, by simply taking out the screws 62, and can be replaced with equal facility. The plate 61 is removed to thread the 130 meoaee cone 32 to the entrance 74: to the tube 63 below, into and through the inner branch of such tube, under the idler 64 mounted in the elbow of such tube, upward through the outer branch of such tube and the connected and connecting passages 67 and 69, out from the top of the screw 68 above said outer branch, forward to and around the tensionwheel 73, and finally forward to and around the bobbin 10 on the shaft 9, such thread re ceiving the required amountof wax during its passage from one branch to the other of said tube and while guided by said idler. The thread from the cone 34; is waxed in a similar manner. This latter thread passes from the cone 34: to and through the other tube 63, as before, and from the screw associated with said tube said thread passes upward to the idler 72, and from the latter to the mechanism which handles the same.

The threads thus being thoroughly waxed when they leave the tank 41 or the receptacle 59 are. by suitable heating appliances, kept at a temperature sufliciently high to maintain the wax thereon at the proper degree of consistency, or, in other words,to prevent such wax from hardening, from the time the threads emerge from said recepand the attached and contacle until they are respectively wound on the bobbin and used in the stitching operation of the machine.

What I claim as my invention, and desire to secure by Letters Patent, is

1. A thread-waxing device comprising, in combination, a heating tank provided with a wax receptacle, a single tube bent to form a U-shaped member, such member having a slotted elbow, an idler mounted in the slot in such elbow, and means to support said tube in said receptacle.

2. A thread-waxing device comprising, in combination, a heating tank provided with a wax receptacle, a U-shaped tube having an open elbow and there provided with a thread guide, and a supporting member for such tube, the latter opening through the former.

3. A thread-waxing device comprising, in combination, a heating tank provided with a wax receptacle which opens through the top of said tank, a removable plate mounted on said tank over said receptacle, U- shaped tubes depending from said plate into said receptacle, said tubes having slots in the elbows at the bottom and opening at the top through said plate, and idlers mounted in said slots.

JOHN J. DOIDGE.

Witnesses:

ALwN WEBSTER, Amos H. AxnsoN. 

